I am 5'3, 118lbs, am a 32C and this top fit me perfectly as an undergarment to layer with. The material didn't seem to have enough give to call this a "one size fits all" top. If you are larger busted or above a size medium I would use caution if considering this.

GRANDDAUGHTER NEEDED THIS TUBE TOP FOR A SORORIETY FUNCTION. SHE IS VERY SMALL 4'11" AND WAS WORRIED IT WOULD BE TOO BIG AS IT WAS A ONE SIZE FITS ALL ITEM. SHE IS DELIGHTED WITH THE FIT AND THE QUALITY OF THE TOP. DELIVERY WAS PROMPT.